The only difference is that usually in crowd funding apps sellers will not get money immediately (on AirBnB owner of the place will get money after you move in, but money itself will be locked on your account immediately after reservation).

US vs Europe

Turns out that if your company is based in US there are already few options, but Balanced seems to be the best one. These guys are really amazing. They are building an open company. Read about it.

But if your company is based in Europe options are much more limited.

After some investigation for us we found new promising solution called Mangopay.